Aluminum oxide is easily oxidized to produce alumina, which affects conductivity.The resistance of aluminum wire is high, heating is serious, these can affect the performance of PLC.Therefore, it...

Except win10, can other clients still work properly? How your win10 connect to TL-WPA281, wired or wirelessly? If it's wireless connection, have you tried forgetting the profile and reconnet it?

Firstly, is your Sky router working properly? If router does not work, make sure the router is working firstly. If yes, when you try to set up range extender, can you detect the wifi signal from your...

You may set the later RE200 work at Access Point mode. Then, you may connect it to the former one via a cable. NOTE: make sure you get RE200 V2, and it seems only V2 support access ponit mode.

If you want to ping or access the device B which is connecting to TL-WDR4300 from the device A which is connecting to FritzBox, you need to open port for the device B on TL-WDR4300.

wired connection is working properly? wireless is connected but no internet? Have you tried changing wireless channel? All the devices have the same issue?